Rare decay \pi^0 \to e^+e^- as a Test of Standard Model
High Energy Physics - Phenomenology
2014-11-20 v3 High Energy Physics - Experiment
Abstract
Experimental and theoretical progress concerning the rare decay \pi^0 \to e^+e^- is briefly reviewed. It includes the latest data from KTeV and a new model independent estimate of the decay branching which show the deviation between experiment and theory at the level of . The predictions for \eta and \eta' decays into lepton pair are presented. We also comment on the impact on the pion rare decay estimate of the BABAR collaboration on the pion transition form factor at large momentum transfer.
Keywords
Cite
@article{arxiv.0905.4577,
title = {Rare decay \pi^0 \to e^+e^- as a Test of Standard Model},
author = {A. E. Dorokhov},
journal= {arXiv preprint arXiv:0905.4577},
year = {2014}
}
Comments
11 pages, 2 figures, extended version of the talk given at "New Physics and Quantum Chromodynamics at External Conditions" conference, May 3-6, 2009, Dnipropetrovsk, Ukraine